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EWG's Tap Water Database — 2021 UPDATE

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1,2,3-Trichloropropane

City of Patterson

1,2,3-Trichloropropane is a potent carcinogen that contaminates drinking water in agricultural regions where it was historically used as soil fumigant. Click here to read more about carcinogenic VOCs.

MORE ABOUT THIS CONTAMINANT

 

75

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.00714 ppb141ND - 0.1000 ppb
2014ND50ND
2015ND10ND
2016ND120ND
2017N/A00N/A
20180.00226 ppb3510ND - 0.0110 ppb
20190.00613 ppb87ND - 0.00900 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.0007 ppb

The EWG Health Guideline of 0.0007 ppb for 1,2,3-trichloropropane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2013-04-24A3D0757-07AND
2013-04-24A3D0757-03AND
2013-04-24A3D0757-11AND
2013-04-24A3D0757-09AND
2013-04-24A3D0757-13AND
2013-04-24A3D0757-01AND
2013-04-24A3D0757-05A0.1000 ppb
2013-10-23A3I1246-08AND
2013-10-23A3I1246-14AND
2013-10-23A3I1246-12AND
2013-10-23A3I1246-04AND
2013-10-23A3I1246-01AND
2013-10-23A3I1246-10AND
2013-10-23A3I1246-06AND
2014-03-115867-018-0928ND
2014-05-135867-012-0900ND
2014-06-105867-018-0930ND
2014-09-095867-018-1005ND
2014-12-095867-018-1146ND
2015-03-125867-018-1224ND
2016-07-265867-014-0715ND
2016-07-265867-018-0721ND
2016-07-265867-016-0730ND
2016-07-265867-002-0841ND
2016-07-265867-005-0744ND
2016-10-185867-002-0917ND
2016-10-185867-016-0919ND
2016-10-185867-005-0846ND
2016-10-185867-012-0906ND
2016-10-185867-009-0945ND
2016-10-185867-018-0928ND
2016-10-185867-014-0937ND
2018-02-135867-002-1000ND
2018-02-135867-005-0930ND
2018-02-135867-012-0940ND
2018-02-135867-009-08270.00700 ppb
2018-02-135867-018-0900ND
2018-02-135867-014-0841ND
2018-02-275867-016-0810ND
2018-03-085867-009-0859ND
2018-04-245867-009-07400.00700 ppb
2018-05-155867-014-0755ND
2018-05-155867-005-0830ND
2018-05-155867-018-0805ND
2018-05-155867-012-0840ND
2018-05-155867-009-07450.00700 ppb
2018-05-155867-002-0732ND
2018-05-155867-016-0820ND
2018-06-125867-009-07470.00900 ppb
2018-07-035867-009-09200.00600 ppb
2018-08-075867-016-0934ND
2018-08-075867-014-0850ND
2018-08-075867-005-0958ND
2018-08-075867-012-0947ND
2018-08-075867-018-0921ND
2018-08-075867-002-0744ND
2018-08-075867-009-08300.00800 ppb
2018-09-045867-009-09020.00700 ppb
2018-10-025867-009-07370.0110 ppb
2018-11-065867-018-0825ND
2018-11-065867-016-0845ND
2018-11-065867-009-07550.00900 ppb
2018-11-065867-014-0815ND
2018-11-065867-005-0855ND
2018-11-065867-012-0909ND
2018-11-065867-002-0722ND
2018-12-045867-009-08090.00800 ppb
2019-01-295867-009-08550.00700 ppb
2019-02-125867-009-07540.00600 ppb
2019-03-055867-009-08500.00700 ppb
2019-04-025867-009-08200.00800 ppb
2019-05-075867-009-08400.00900 ppb
2019-06-045867-009-09250.00500 ppb
2019-08-065867-009-08000.00700 ppb
2019-11-055867-009-0830ND